Improvement in heating-stoves



" s. E. Hfwps.

Ilmprfwe-ment in Heating-Stoves.

Patented `June-13. 187i. K

-UNITED STATES PATENT OFFICE.

VSHUBAEL E. HEwEs, or ALBANY, NEW YORK.

IMPRovl-:MENT |N HEATING-sTovEs- Speciicationrforming part of Letters Patent No. 115,958, dated June 13, 1871.

Nature and Objects of the Invention.

AMy invention relates, rst, to a novel constructionv of the grate, which may be adapted for burning either anthracite or bituminous coal or wood; second, to a crown-piece surmounting the hre-chamber, as hereinafter de scribed; third, to the combination of a casing surrounding a fire-chamber of peculiar construction; fourth, to a hood applied over and projecting below the upper end of the casing to cause a reverberation of the heated air, as hereinafter described; fifth, to the combination, with the aforesaid'hood and casing, of a register by which air may be admitted from the space beneath the hood into the interior of the smoke-flue; sixth, to a peculiar construction of smoke-flue, in combination with a valve applied within it to deect the gaseous products of combustion and to regulate the strength of draft, as may be required; seventh, to the combination of double illuminated doors with the peculiar furnace hereinafter described.

Description of the Accompanying Drawing. Figure 1 is a vertical longitudinal section of a stove illustrating my invention. Fig. 2 is a vertical transverse section of the same, the

-upper part being shownA in external elevation.

Fig. 3 is a horizontal section thereof at :v w, Fig. l. Fig. 4 is a horizontal section of the same at y y, Fig. 1.

General Description. B is the hollow bottom of the stove, formed with openings b to allow the passage of air from a duct beneath into the air-heating chamber within -the casing E. G may represent the ash-pit, and D the circular central portion of the grate, on each side, of which are grated i wings D1, adapted to form an extended f1reduced. For burning wood the partitions D2 are omitted and flat plates (shown by dotted lines at D2, Fig. 1) are placed over the whole extent of the grate D Dl D1, and air to support combustion is admitted through the register d. Above the fire-chamber is a crown, I, Within which the gases are caused to reverberate and mingle with the air so as to insure their cornplete combustion. Frepresents the walls of the main hre-chamber, and F the upper part thereof, surrounding and surmounting the crown I, and communicating with the discharge-flue K, the upper part of which is enlarged at K to receive within it a spindle-shaped or conical valve, L, which is supported therein by a chain,

Ul, from a crank-shaft or winch, N, by which the said damper maybe raised or lowered in order to regulate the strength or force of draft, as

required. These parts may .be secured in any position to which they are set by a pawl or ratchet, P, or other adequate means. The form and location of this damper within the enlargeis closed tightly around the ue K, while its 4 expanded lower end extends below the top of -f vthe casing E at sufficient distance' therefrom v, to allow the passage of the heatedl airV in the 5 f manner indicated by thearrows. k represents a damper on the ilue K, by opening which air may be admitted into the said Aiiue from the space beneath the hood Gr in order to assist in regulating the draft, or to insure the more perfect combustion of the evolved gases, if necessary, or for the purposev of drawing off vitiated air from the room. The conformation of the fire-chamber F F and the casing E around it are such as to insure a perfect combustion of all the fuel and the gases rising therefrom,

and the absorption by the air of Y allthe heat produced. R is a door in the external casing E, and S a door in corresponding position in the crown I. The doors are for the purpose of introducing fuel. They may be connected so as to be opened together, or may be disconnected. The inner door S is made slightly shorter than the outer one, R, so that it may open freely into the aperture Within which the latter ts. Both these doors are furnished With Windows s, Fig. l, for illumination, said Windows being in corresponding positions, so that the light may shine through both.

Claims.

I claim as my inventionl. The extended grate D D1, constructed and adapted for use in manner substantially as and for the purposes described.

2. The combination of the ire-chamberF and the crown I, when constructed and arranged as specified.

3. The combination of the oblong recham F F', as described.

S. E. HEWES.

' Witnesses:

Ocrnvms KNIGHT, H. G. ELLIOTT. 

